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Astronomy Oct 12, 2021

First frequency-time-resolved imaging spectroscopy observations of solar radio spikes

Solar radio spikes are short duration, narrowband radio bursts that are signatures of the acceleration of non-thermal electrons in solar flares. They are observed over a wide range of frequencies from the tens of MHz (Melnik ...

Quantum Physics Oct 8, 2021

Unambiguous experimental demonstration of magnon transfer torque effect

Spin torque provides convenient electric means to efficiently control magnetizations. It can usually be produced by spin-polarized current or pure spin current via spin Hall effect. The former and the latter are named as ...

Earth Sciences Oct 8, 2021

Stress in Earth's crust determined without earthquake data

Scientists at Los Alamos National Laboratory have developed a method to determine the orientation of mechanical stress in the earth's crust without relying on data from earthquakes or drilling. This method is less expensive ...

Earth Sciences Oct 8, 2021

Deep roots of Australia's geology revealed

A new study has shown for the first time how Australia's rich geological history is reflected deep below the Earth's surface.

Nanophysics Oct 4, 2021

A breakthrough in droplet manipulation

Researchers in the Department of Mechanical Engineering at the University of Hong Kong (HKU) have made a key breakthrough in droplet manipulation. They have discovered an innovative way to navigate liquids on a surface in ...

Materials Science Sep 28, 2021

Study explores remarkable negative thermal expansion seen in layered ruthenates

A formerly unnoticed monoclinic distortion in Ca2RuO4 explains its enormous negative thermal expansion (NTE) over a wide range of temperatures, discover researchers from Tokyo Tech. The work promises a different route for ...

Nanophysics Sep 22, 2021

Signature approach reveals prized property in nanoscopic material

It took a nanoscale construction project on par with the much larger ones peppering Nebraska highways, but physicist Xia Hong is now directing the haphazard traffic of electrons well enough to analyze it—and, down the road, ...

Polymers Sep 16, 2021

Engineering a polymer network to act as active camouflage on demand

The animal kingdom is full of creatures with active camouflage. What looks like a drab pile of sand and rocks might actually be a brightly colored squid, expanding and contracting structures within their skin to reveal shades ...

Materials Science Sep 6, 2021

Probing molecular orientation by polarization-selective transient absorption spectroscopy

The organic solar cell (OSC) heterojunction interface is where key photophysical processes such as charge separation and recombination occur. The molecular orientation at the interface is one of the key factors that determine ...

Superconductivity Sep 2, 2021

A surprise result for solid state physicists hints at an unusual electron behavior

While studying the behavior of electrons in iron-based superconducting materials, researchers at the University of Tokyo observed a strange signal relating to the way electrons are arranged. The signal implies a new arrangement ...

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